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diff --git a/mitmproxy/docs/tutorials/30second.rst b/mitmproxy/docs/tutorials/30second.rst new file mode 100644 index 00000000..4c8bf326 --- /dev/null +++ b/mitmproxy/docs/tutorials/30second.rst @@ -0,0 +1,66 @@ +.. _30second: + +Client playback: a 30 second example +==================================== + +My local cafe is serviced by a rickety and unreliable wireless network, +generously sponsored with ratepayers' money by our city council. After +connecting, you are redirected to an SSL-protected page that prompts you for a +username and password. Once you've entered your details, you are free to enjoy +the intermittent dropouts, treacle-like speeds and incorrectly configured +transparent proxy. + +I tend to automate this kind of thing at the first opportunity, on the theory +that time spent now will be more than made up in the long run. In this case, I +might use Firebug_ to ferret out the form post +parameters and target URL, then fire up an editor to write a little script +using Python's urllib_ to simulate a submission. +That's a lot of futzing about. With mitmproxy we can do the job +in literally 30 seconds, without having to worry about any of the details. +Here's how. + +1. Run mitmdump to record our HTTP conversation to a file. +---------------------------------------------------------- + +>>> mitmdump -w wireless-login + +2. Point your browser at the mitmdump instance. +----------------------------------------------- + +I use a tiny Firefox addon called `Toggle Proxy`_ to switch quickly to and from mitmproxy. +I'm assuming you've already :ref:`configured +your browser with mitmproxy's SSL certificate +authority <certinstall>`. + +3. Log in as usual. +------------------- + +And that's it! You now have a serialized version of the login process in the +file wireless-login, and you can replay it at any time like this: + +>>> mitmdump -c wireless-login + +Embellishments +-------------- + +We're really done at this point, but there are a couple of embellishments we +could make if we wanted. I use wicd_ to +automatically join wireless networks I frequent, and it lets me specify a +command to run after connecting. I used the client replay command above and +voila! - totally hands-free wireless network startup. + +We might also want to prune requests that download CSS, JS, images and so +forth. These add only a few moments to the time it takes to replay, but they're +not really needed and I somehow feel compelled to trim them anyway. So, we fire up +the mitmproxy console tool on our serialized conversation, like so: + +>>> mitmproxy -r wireless-login + +We can now go through and manually delete (using the :kbd:`d` keyboard shortcut) +everything we want to trim. When we're done, we use :kbd:`w` to save the +conversation back to the file. + +.. _Firebug: https://getfirebug.com/ +.. _urllib: https://docs.python.org/library/urllib.html +.. _Toggle Proxy: https://addons.mozilla.org/en-us/firefox/addon/toggle-proxy-51740/ +.. _wicd: https://launchpad.net/wicd |